CN201819808U - Fatigue strength testing device for parking brake of wheelchair - Google Patents
Fatigue strength testing device for parking brake of wheelchair Download PDFInfo
- Publication number
- CN201819808U CN201819808U CN2010205201466U CN201020520146U CN201819808U CN 201819808 U CN201819808 U CN 201819808U CN 2010205201466 U CN2010205201466 U CN 2010205201466U CN 201020520146 U CN201020520146 U CN 201020520146U CN 201819808 U CN201819808 U CN 201819808U
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- wheel
- chair
- parking brake
- taking turns
- fatigue strength
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Abstract
The utility model provides a fatigue strength testing device for the parking brake of a wheelchair. The fatigue strength testing device comprises a base, a support mechanism, a motor driving mechanism, a wheelchair rear wheel driving mechanism, a wheelchair front wheel driving mechanism and a repeated operating mechanism for the parking brake of the wheelchair, wherein the wheelchair rear wheel driving mechanism can drive two rear wheels of the wheelchair to be tested to rotate. The wheelchair front wheel driving mechanism can drive the two front wheels of the wheelchair to be tested to rotate. The repeated operating mechanism for the parking brake of the wheelchair can be used for implementing repeated braking to the parking brake of the wheelchair to be tested. The fatigue strength testing device is used for carrying out repeated operations to the parking brake of the wheelchair for specified times, so as to estimate the performance of the parking brake of the wheelchair; and the fatigue strength testing device has a simple structure and is convenient to operate.
Description
Technical field
The utility model relates to a kind of testing apparatus, particularly a kind of Wheel-chair parking brake fatigue strength test device of taking turns.
Background technology
The usability of wheel Wheel-chair parking brake will directly have influence on the safe reliability of wheel Wheel-chair.Be the people's that guarantees to drive a vehicle safety, must test, determine its fatigue strength (serviceable life), can arrange in view of the above the rational time between overhauls(TBO) simultaneously the performance of wheel Wheel-chair parking brake.The wheel Wheel-chair of domestic production at present is broadly divided into two big classes: manual pulley Wheel-chair and electric wheel-chair vehicle.Wherein, the manual pulley Wheel-chair accounts for most of market share, and electric wheel-chair vehicle market at home also is in the stage of growth.Because manual pulley Wheel-chair and part electric wheel-chair vehicle all adopt mechanical manual brake, therefore exploitation wheel Wheel-chair parking brake fatigue strength test device has very big application space.
Fatigue strength is meant that material is under the alternate load effect and non-destructive maximum stress.Braking of wheel Wheel-chair and the process that starts are equivalent to the process of an alternate load effect, so the fatigue strength parameter can reasonably embody the security performance of wheel Wheel-chair parking brake.Related request according to " GB/T 18029.3---wheel Wheel-chair the 3rd part: the mensuration of detent ", the key of wheel Wheel-chair parking brake fatigue strength test, be that one of design can repeat brake operating device, utilize this device operation parking brake to mesh repeatedly-unclamp and reach 60,000 time, estimate with performance to detent.
At present, for the parking brake of motor vehicle the testing apparatus of a lot of comparative maturities is arranged, but the common Wheel-chair parking brake of taking turns is not also had proving installation preferably.Therefore, be necessary to design a kind of device at wheel Wheel-chair parking brake fatigue strength test, this has important effect to the safe reliability that improves the wheel Wheel-chair.
The utility model content
The purpose of this utility model exactly in order to address the above problem, provides a kind of Wheel-chair parking brake fatigue strength test device of taking turns.
The purpose of this utility model realizes by following technical scheme: a kind of Wheel-chair parking brake fatigue strength test device of taking turns comprises:
Base;
Supporting mechanism is fixed on the base, comprising being used for fixing the frid of taking turns Wheel-chair;
Motor-driven mechanism is installed on the base;
Wheelchair back wheels of vehicle driving mechanism, comprise rear wheel drive axle and two rear wheel drive wheels, the rear wheel drive axle is movably arranged on the supporting mechanism and with the motor-driven mechanism transmission and links to each other, and two rear wheel drive wheels are installed on the rear wheel drive axle at interval and also can link to each other with two trailing wheel transmissions taking turns Wheel-chair to be measured respectively;
Wheel Wheel-chair front-wheel drive system, comprise front wheel driving shaft and two front-wheel drive wheels, front wheel driving shaft is movably arranged on the supporting mechanism and by driving belt and links to each other with rear wheel drive through-drive, and two front-wheel drive wheels are installed on the front wheel driving shaft at interval and also can link to each other with two front-wheel transmissions taking turns Wheel-chair to be measured respectively;
Wheel Wheel-chair parking brake repetitive operation mechanism comprises disk shaft, rotating disk, rocking bar and spring, and disk shaft is movably arranged on the supporting mechanism and by the commutation gear train and links to each other with rear wheel drive through-drive, and the rotating disk inclination wears and is fixed on the disk shaft; Rocking bar is fixedlyed connected across by montant with cross bar, wherein montant lower end and supporting mechanism are movably connected, and the outer end of cross bar can contact or disengage with rotating disk, and the inner of cross bar is used for and parking brake Contact Transmission of taking turns Wheel-chair to be measured; One end of spring is fixed on the supporting mechanism, and the other end is used for linking to each other with parking brake of taking turns Wheel-chair to be measured.
Also comprise pressure transducer, this pressure transducer is arranged between rocking bar and the parking brake of taking turns Wheel-chair to be measured.
The described supporting mechanism that front wheel driving shaft is installed comprises two support bars, is respectively equipped with vertical elongated slot on two support bars, and adjustable for height slide block is installed in the elongated slot, and described front wheel driving shaft is installed on the above-mentioned slide block on two support bars by being erected at.
An end that is used for the described spring that links to each other with parking brake of taking turns Wheel-chair to be measured is provided with the collar.
Be respectively equipped with to arrange threaded holes in the two side of described vertical elongated slot on described two support bars more, described slide block is installed in the described vertical elongated slot by bolt, thereby the height of the upper-lower position adjusting slider by regulating bolt, can realize the height change of front wheel driving shaft, thereby realize the variation of level angle between front wheel driving shaft and the rear wheel drive axle, reach the upward slope state or the descending state of analog wheel Wheel-chair.
The variation range of described level angle is 0 °～± 10 °.
The utility model wheel Wheel-chair parking brake fatigue strength test device starts motor with after wheelchair frame to be measured is on frid, and whole device will be realized measuring ability automatically according to mechanical drive principle.Package unit simple in structure only is made up of driving wheel and a small amount of other mechanical components.Rotating disk in rotation process, from the noncontact of rocking bar to contacting again to impelling rocking bar to reach the full swing distance, the effect of generation is that parking brake is from carrying out the transition to gradually and the bull wheel contact condition with wheel Wheel-chair bull wheel disengaged position.When rocking bar reach full swing apart from the time, parking brake and wheel compress, and play braking effect, this moment, spring was stretched to maximum distortion.When rotating disk is rotated further, because the design of the inclined shaft heart of rotating disk, the vertical range of rocking bar and rotating disk can shorten, and the spring that is in the maximum tension state at this moment can make parking brake break away from wheel gradually.When rotating disk and rocking bar were got back to contactless state, spring was got back to initial state of nature, and parking brake has also been got back to original releasing orientation.Whole process has well been simulated a parking brake and has truly been braked the process of unclamping.In ensuing process, as long as motor does not stop operating, parking brake will repeat down from braking to the process of unclamping, and does not need artificial interference, and is simple to operate, convenient.
Front wheel driving shaft by the scalable slider designs on the support member, has been simulated pavement behavior different when wheelchair garage is walked, more can the true embodiment actual conditions in the performance change of parking brake.
Be installed in the size that pressure transducer on the parking brake can effectively write down the power that at every turn is subjected to.Performance situation according to test back parking brake in conjunction with the analysis of stressed size, can provide reliable performance parameter for wheelchair car manufacturer.
Description of drawings
Fig. 1 be the utility model wheel Wheel-chair parking brake fatigue strength test device face structural front view (being with the tested Wheel-chair of taking turns);
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the right view of Fig. 1;
Fig. 4 is perspective view of the present utility model (a band measured wheel Wheel-chair).
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
Referring to Fig. 1, cooperation is referring to Fig. 2, Fig. 3, Fig. 4, the Wheel-chair parking brake fatigue strength test device of taking turns of the present utility model comprises base 1, supporting mechanism 2, motor-driven mechanism 3, wheelchair back wheels of vehicle driving mechanism 4, wheel Wheel-chair front-wheel drive system 5 and wheel Wheel-chair parking brake repetitive operation mechanism 6.
Supporting mechanism 2 is fixed on the base 1, comprising being used for fixing the frid 21 of taking turns Wheel-chair 7;
Motor-driven mechanism 3 is installed on the base 1.
Wheelchair back wheels of vehicle driving mechanism 4 comprises rear wheel drive axle 41 and two rear wheel drive wheels 42, rear wheel drive axle 41 is movably arranged on the supporting mechanism 2 and with motor-driven mechanism 3 transmissions and links to each other, and two rear wheel drive wheels 42 are installed on the rear wheel drive axle 41 at interval and also can link to each other with two trailing wheel 71 transmissions taking turns Wheel-chair 7 to be measured respectively;
Wheel Wheel-chair front-wheel drive system 5 comprises front wheel driving shaft 51 and two front-wheel drive wheels 52, front wheel driving shaft 51 is movably arranged on the supporting mechanism 2 and by driving belt and links to each other with 41 transmissions of rear wheel drive axle, and two front-wheel drive wheels 52 are installed on the front wheel driving shaft at interval and also can link to each other with two front-wheel 72 transmissions taking turns Wheel-chair 7 to be measured respectively.
Wheel Wheel-chair parking brake repetitive operation mechanism 6 comprises disk shaft 61, rotating disk 62, rocking bar 63 and spring 64, disk shaft 61 is movably arranged on the supporting mechanism 2 and by commutation gear train 8 and links to each other with 41 transmissions of rear wheel drive axle, and rotating disk 62 inclinations wear and are fixed on the disk shaft 61; Rocking bar 63 is fixedlyed connected across by montant with cross bar, wherein montant lower end and supporting mechanism 2 are movably connected, and the outer end of cross bar can contact or disengage with rotating disk 62, and the inner of cross bar is used for and parking brake 73 Contact Transmission of taking turns Wheel-chair 7 to be measured; One end of spring 64 is fixed on the supporting mechanism 2 by a collar, and the other end is used for linking to each other with parking brake 73 of taking turns Wheel-chair to be measured.
Device of the present utility model also comprises pressure transducer (not shown come out), and this pressure transducer is arranged between rocking bar 63 and the parking brake 73 of taking turns Wheel-chair to be measured.
The supporting mechanism 2 that is used to install front wheel driving shaft 51 in the utility model comprises two support bars 22, be respectively equipped with vertical elongated slot on these two support bars, adjustable for height slide block (not shown come out) is installed in the elongated slot, and front wheel driving shaft 51 is installed on the above-mentioned slide block on two support bars 22 by being erected at.Be respectively equipped with many row's threaded holes in the two side of the vertical elongated slot of two support bars 22, above-mentioned slide block is installed in the vertical elongated slot by bolt, thereby the height of the upper-lower position adjusting slider by regulating bolt, can realize the height change of front wheel driving shaft 51, thereby realize the variation of level angle between front wheel driving shaft 51 and the rear wheel drive axle 41, reach the upward slope state or the descending state of analog wheel Wheel-chair.The variation range of above-mentioned level angle is 0 °～± 10 °.
But test process principle accompanying drawings of the present utility model is as follows:
The utility model drives the motion that realizes each rotatable parts based on mechanical drive principle by motor-driven mechanism 3, makes parking brake 73 can repeat to mesh-unclamp 60000 times.Move performance and the life-span of checking detent by the structural change and the process rear brake of detent in the checking process itself and the distance that is braked between the wheel.
According to the regulation among the GB/T 18,029 3, for different modes of operation, wheel Wheel-chair parking brake has different maximum operating physical forces.When mode of operation was hand, maximum operating physical force was 60 ± 5 newton; When mode of operation is a pin and when pressing, maximum operating physical force is 100 ± 10 newton; When mode of operation is a pin and when drawing, maximum operating physical force is 60 ± 5 newton; When mode of operation was finger, maximum operating physical force was 13.5 ± 2 newton.For the common manual wheel Wheel-chair that the utility model was suitable for, the operating physical force of the maximum that we adopt is 60 ± 5 newton.
As shown in Figure 4, before testing, measured wheel Wheel-chair 7 is installed in the proving installation, the wheel Wheel-chair is maintained fixed by frid 21.Make the little front-wheel 72 and the big trailing wheel 71 of taking turns Wheel-chair take turns 42 maintenance excellent contact with the front-wheel drive wheel 52 and the rear wheel drive of bottom respectively by adjustment, initial state is a level.Wheel Wheel-chair parking brake 73 initial states are for unclamping, and spring 64 is connected with detent by the collar, and spring in the raw.
Before the test should wheel lay on the Wheel-chair test that is equivalent to normal human's weight with the dummy or etc. weight.
Setup test, starter motor by the demonstration of pressure transducer and external equipment, is in time adjusted the size that rotating speed of motor is come control, and the power of guarantee effect on parking brake is not more than 1.5 times maximum operating physical force (60 ± 5 newton).
Specific implementation process is as follows:
(1) writes down or mark brake components and be installed in relative position on the wheelchair frame.
(2) driving of motor drives 41 rotations of rear wheel drive axle, two effects are played in the rotation of rear wheel drive axle 41: rotate by driving the front wheel driving shaft 51 that links to each other with driving-belt with it on the one hand, make the tested Wheel-chair of taking turns that is mounted thereon can simulate normal motion state; Pass through the steering-effecting of two conical gears on the other hand, the rotating disk 62 that drive is fixed on the disk shaft 61 rotates, rotating disk is in rotation process, from with the noncontact of rocking bar 63 to contacting again to impelling rocking bar to reach the full swing distance, the effect of generation is that parking brake 73 is from carrying out the transition to gradually and bull wheel 71 contact conditions with wheel Wheel-chair bull wheel disengaged position.When rocking bar reach full swing apart from the time, parking brake and bull wheel 71 compress, and play braking effect, this moment, spring 64 was stretched to maximum distortion.When rotating disk 62 is rotated further, because the inclined shaft heart of rotating disk designs, rocking bar 63 can shorten with the vertical range of rotating disk, and the spring 64 that is in the maximum tension state this moment can make parking brake 73 break away from bull wheel 71 gradually.When rotating disk and rocking bar were got back to contactless state, spring was got back to initial state of nature, and parking brake has also been got back to original releasing orientation.Whole process has well been simulated a parking brake and has truly been braked the process of unclamping.In ensuing process, as long as motor does not stop operating, parking brake will repeat down from braking to the process of unclamping, and this crosses range request and carries out 60000 times.The number of times of test can be controlled by the time: measure the time of single process several times respectively with stopwatch, obtain mean value, the product of this mean value and testing time is the time that the testing time of wanting need be waited for that reaches.
(3) after the end of test (EOT), check brake components and be braked not have between the wheel component and move,, note mobile distance if macroscopic moving arranged.Check whether detent itself obvious distortion takes place, whether the rear wheelchairs braking ability is finished in test still good etc.
After utilizing the utility model that wheel Wheel-chair parking brake is tested, can make evaluation to the performance of this detent well.By adjusting the position of front wheel driving shaft, can finish the test under different road surface.
Claims (6)
1. wheel Wheel-chair parking brake fatigue strength test device is characterized in that comprising:
Base;
Supporting mechanism is fixed on the base, comprising being used for fixing the frid of taking turns Wheel-chair;
Motor-driven mechanism is installed on the base;
Wheelchair back wheels of vehicle driving mechanism, comprise rear wheel drive axle and two rear wheel drive wheels, the rear wheel drive axle is movably arranged on the supporting mechanism and with the motor-driven mechanism transmission and links to each other, and two rear wheel drive wheels are installed on the rear wheel drive axle at interval and also can link to each other with two trailing wheel transmissions taking turns Wheel-chair to be measured respectively;
Wheel Wheel-chair front-wheel drive system, comprise front wheel driving shaft and two front-wheel drive wheels, front wheel driving shaft is movably arranged on the supporting mechanism and by driving belt and links to each other with rear wheel drive through-drive, and two front-wheel drive wheels are installed on the front wheel driving shaft at interval and also can link to each other with two front-wheel transmissions taking turns Wheel-chair to be measured respectively;
Wheel Wheel-chair parking brake repetitive operation mechanism comprises disk shaft, rotating disk, rocking bar and spring, and disk shaft is movably arranged on the supporting mechanism and by the commutation gear train and links to each other with rear wheel drive through-drive, and the rotating disk inclination wears and is fixed on the disk shaft; Rocking bar is fixedlyed connected across by montant with cross bar, wherein montant lower end and supporting mechanism are movably connected, and the outer end of cross bar can contact or disengage with rotating disk, and the inner of cross bar is used for and parking brake Contact Transmission of taking turns Wheel-chair to be measured; One end of spring is fixed on the supporting mechanism, and the other end is used for linking to each other with parking brake of taking turns Wheel-chair to be measured.
2. the Wheel-chair parking brake fatigue strength test device of taking turns according to claim 1 is characterized in that: also comprise pressure transducer, this pressure transducer is arranged between rocking bar and the parking brake of taking turns Wheel-chair to be measured.
3. the Wheel-chair parking brake fatigue strength test device of taking turns according to claim 1 and 2, it is characterized in that: the described supporting mechanism that front wheel driving shaft is installed comprises two support bars, be respectively equipped with vertical elongated slot on two support bars, adjustable for height slide block is installed in the elongated slot, and described front wheel driving shaft is installed on the above-mentioned slide block on two support bars by being erected at.
4. the Wheel-chair parking brake fatigue strength test device of taking turns according to claim 1 and 2 is characterized in that: an end that is used for the described spring that links to each other with parking brake of taking turns Wheel-chair to be measured is provided with the collar.
5. the Wheel-chair parking brake fatigue strength test device of taking turns according to claim 3, it is characterized in that: be respectively equipped with many row's threaded holes in the two side of described vertical elongated slot on described two support bars, described slide block is installed in the described vertical elongated slot by bolt.
6. the Wheel-chair parking brake fatigue strength test device of taking turns according to claim 5, it is characterized in that: the variation range of described level angle is 0 °～± 10 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205201466U CN201819808U (en) | 2010-09-07 | 2010-09-07 | Fatigue strength testing device for parking brake of wheelchair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205201466U CN201819808U (en) | 2010-09-07 | 2010-09-07 | Fatigue strength testing device for parking brake of wheelchair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201819808U true CN201819808U (en) | 2011-05-04 |
Family
ID=43917758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205201466U Expired - Fee Related CN201819808U (en) | 2010-09-07 | 2010-09-07 | Fatigue strength testing device for parking brake of wheelchair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201819808U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401738A (en) * | 2010-09-07 | 2012-04-04 | 上海理工大学 | Fatigue strength test device for parking brake of wheelchair |
| CN102721547A (en) * | 2012-06-11 | 2012-10-10 | 国家康复辅具研究中心 | Wheel-type stair climbing wheelchair fatigue testing machine |
| CN106053100A (en) * | 2016-08-08 | 2016-10-26 | 淮阴工学院 | Parking gradient angle detection system of automobile driven by double parallel cylinders |
| CN106370439A (en) * | 2016-09-23 | 2017-02-01 | 丹阳市鑫泰医疗器材有限公司 | Walking aiding wheelchair fatigue testing machine |
| CN111031990A (en) * | 2017-08-08 | 2020-04-17 | 迪米特里奥斯·格坎恩塔茨斯 | Device for simulating a sitting position on a wheelchair |
-
2010
- 2010-09-07 CN CN2010205201466U patent/CN201819808U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401738A (en) * | 2010-09-07 | 2012-04-04 | 上海理工大学 | Fatigue strength test device for parking brake of wheelchair |
| CN102401738B (en) * | 2010-09-07 | 2013-11-27 | 上海理工大学 | Fatigue strength test device for parking brake of wheelchair |
| CN102721547A (en) * | 2012-06-11 | 2012-10-10 | 国家康复辅具研究中心 | Wheel-type stair climbing wheelchair fatigue testing machine |
| CN106053100A (en) * | 2016-08-08 | 2016-10-26 | 淮阴工学院 | Parking gradient angle detection system of automobile driven by double parallel cylinders |
| CN106053100B (en) * | 2016-08-08 | 2018-12-28 | 淮阴工学院 | Twin-tub driven in parallel automobile parking angle of gradient detection system |
| CN106370439A (en) * | 2016-09-23 | 2017-02-01 | 丹阳市鑫泰医疗器材有限公司 | Walking aiding wheelchair fatigue testing machine |
| CN111031990A (en) * | 2017-08-08 | 2020-04-17 | 迪米特里奥斯·格坎恩塔茨斯 | Device for simulating a sitting position on a wheelchair |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20110907 |